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Voyager 2 Observation of the Multifractal Spectrum in the Heliosphere and the Heliosheath : Volume 20, Issue 6 (28/11/2013)

By MacEk, W. M.

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Book Id: WPLBN0003987086
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Voyager 2 Observation of the Multifractal Spectrum in the Heliosphere and the Heliosheath : Volume 20, Issue 6 (28/11/2013)  
Author: MacEk, W. M.
Volume: Vol. 20, Issue 6
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Wawrzaszek, A., & Macek, W. M. (2013). Voyager 2 Observation of the Multifractal Spectrum in the Heliosphere and the Heliosheath : Volume 20, Issue 6 (28/11/2013). Retrieved from

Description: Space Research Centre, Polish Academy of Science, Bartycka 18A, 00-716 Warsaw, Poland. We look in detail at the multifractal scaling of the fluctuations in the interplanetary magnetic field strength as measured onboard Voyager 2 in the entire heliosphere and even in the heliosheath. More specifically, we analyse the spectra observed by Voyager 2 in a wide range of solar activity cycles during the years 1980–2009 at various heliospheric latitudes and distances from 6 to 90 astronomical units (AU). We focus on the singularity multifractal spectrum before and after crossing the termination heliospheric shock by Voyager 2 at 84 AU from the Sun. In addition, we investigate here the parameters of the model that describe the asymmetry of the spectrum, depending on the solar cycle. It is worth noting that the spectrum is prevalently right-skewed inside the whole heliosphere. Moreover, we have possibly observed a change in the asymmetry of the spectrum at the termination shock. We show that the degree of multifractality is modulated by the solar activity. Hence these basic results also bring significant support to some earlier claims suggesting that the solar wind termination shock is asymmetric.

Voyager 2 observation of the multifractal spectrum in the heliosphere and the heliosheath

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